Antivibration device for vehicles.



No. 846,797. PATENTED MAR. 12, 1907.

P. LAMPLOUGH.

ANTIVIBRATION DEVICE FOR VEHICLES.

, APPLICATION FILED SEPT. 7; 190a.

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Specification of Letters Patent.

racemes Maren 12, 1902 Application filed September 7,1906. Serial No. 833,666.

To (LZZ whom it may conccrnr Be it known that I, FREDERICK LAMP LOUGH, a subjectof the ,King of Great Britsin, residing at London, England ha've invented new and useful Improvements in and Connected with Antivibration Devices for Vehicles, of which the following is a specification.

The invention relates to that type of antivibration device .in which springs of any ordinary construction located between the axle and the body of avehicle are controlled in their motion by means of arms or levers connected at one end to thebody of the vehicle and at the other end to the axle, suitable friction devices being employed to control the action of the springs, and thereby diminish the shocks transmitted from the roadway to the vehicle.

The object of the present invention is to construct a form of such apparatus in which a good grip is obtained between the frictionsurfaces and which ma; be readily adjusted for wear. In the preferred form of carrying the invention into eiiect the adjustment for wear is effected automatically, and the apparatus only applies friction when. the body of the vehicle is moving ug'iward, the body being comparatively free to .move downward.

The invention is illustrated in the accompanying drawings, in which Fig'ro 1 is an elevation, and Fig. a plan 101' J, and Figs. 3 and 4. sectional details thereof.

In carrying the invention into eil'ect an arm or lever-c is pivotally connected at one of its ends, by means of a short link 6, to the axle 0 through the parts (1, fixing the spring c to theaxle. The other end of this arm or lever a is connected to a spring-ring], split on one side, provided with means whereby it may be tightened round large pivot fixed rigidly to the body or char it of the vehicle. The ringfis split at one o1 its sides.

as shown, and carries two perforated lugs t through which is passed a bolt in, by

' means of which and a nut Z the split springring may be tightened round the pivot. The ever a and lug j are made integral. In order to obtain suliicient friction between the split spring-ringf and pivot 9, they are formed with inter-fitting coarse V-shapcd threads or rings m, as shown at Figs. 3 and i, or with inlcrlitting coarse V snap'wl 5 groo ves.

head 0 of the bolt 7i: will bear against the lug i, and the requisite friction is obtained by screwing up the nut l on the bolt.

When it is desired for the apparatus to be self-adjusting for wear and to act only in one bolt 7c, as shown, is employed and a spring 11. is placed between the head 2 of the bolt and its adjacent lug i. By such means when the arm or lover a is moved in one direction it Will tighten up the split spring-ringf around its pivot like a brake-strap; but when moved in the other direction it will tend to open. the ring f, and consequently there will be little or no 'lriction between the parts.

It is preferred to make the pivot g hollow, with an opening on its outer side closed by a screw-cap g, and to form holes r from the in-' rior. communicating with the threads or grooves, so that lubricant contained in the hollow pivot g may work its way out between the friction-surfaces of the pivot and the split spring-ring f.

What i. claim is i. In anti-vibration devices for vehicles in which springs located between the axle and the body of the vehicle are controlled by rings fitting frictionally around pivots fixed to the body or chassis of the vehicle and con ncctions from said rings to the axle, th com-- bination oi a large pivot,'a ring split one side fitting lrictionally around said. pivot, 'arge inter-fitting V-shapcd threads around the exterior of the pivot and. around the interior the split ring, lugs on said ring, a bolt passed through said lugs to apply and regulate the friction, an. arm integral with one oi said lugs, and means pivotally con-- necting said arm with the axle. 1

2. in antivibration devices for vehicles in which springs located between the axle and the body oi the vehicle are controllml by rings fitting l'rictionally around pivots lined to the bed or chass' if the vehicle and con-- ncctions from said rin s to toe axle, the combination of a large pivot, a ring split at one side fitting h'ictiormlly around said pivot, large inter-fitting ti-shaped threads around the exterior oi the pivot and around the interior of the split ring, lugs on said ring, a bolt passed through said lugs to apply and regulate the Friction, a spring interposed between the bolt-head and the adjacent lug I oi" the split ring, an arm integral with one of said lugs, and means pivotally connecting 1 said arm with the axle.

direction, as previously described, a longer.

IOO

3. 1n znitiv'ilnration devices for vehicles in passing from the interior of the pivot to the which. springs located hetwee'n. the aXlen-nd l exterior, lubricant in Said hollow pivot, a the body of the vehicle are controlled. by i hole in said pivot for the insertion of the rings fitting l'rietionnlly around apivot and lubricant, and a screw-cap to close hole.

5 having oonnentions to the axle of the vehicle, l in Witness whereof I have hereunto set my :5

the combination of a. large. hollow pivot, a 1 hand in presence of two Witnesses. ring split on one side fitting around said! FREDERICK LAMPLOUGH. pivot, [urge inter-fitting- V-shztped threads; Witnesses: around the exterior oi the pivot and around WM. GIRLING,

ro the interior of the split ring, porfomtions A. NUTTING. 

